# Binary Capture Rates for Massive Protostars

## TL;DR

This paper investigates whether disk interactions during star encounters can explain the high multiplicity of massive protostars, using coupled n-body and SPH simulations to test the capture mechanism.

## Contribution

It provides the first combined n-body and SPH simulation study to evaluate disk capture as a source of massive star multiplicity.

## Key findings

- Disk capture may significantly contribute to massive star multiplicity.
- Simulation results support the efficiency of disk interactions in binary formation.
- The study offers new insights into the early evolution of massive stars.

## Abstract

The high multiplicity of massive stars in dense, young clusters is established early in their evolution. The mechanism behind this remains unresolved. Recent results suggest that massive protostars may capture companions through disk interactions with much higher efficiency than their solar mass counterparts. However, this conclusion is based on analytic determinations of capture rates and estimates of the robustness of the resulting binaries. We present the results of coupled n-body and SPH simulations of star-disk encounters to further test the idea that disk-captured binaries contribute to the observed multiplicity of massive stars.